CN201629495U - Wall-through shielded bushing of high-voltage switchgear cabinet - Google Patents
Wall-through shielded bushing of high-voltage switchgear cabinet Download PDFInfo
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- CN201629495U CN201629495U CN2010203007071U CN201020300707U CN201629495U CN 201629495 U CN201629495 U CN 201629495U CN 2010203007071 U CN2010203007071 U CN 2010203007071U CN 201020300707 U CN201020300707 U CN 201020300707U CN 201629495 U CN201629495 U CN 201629495U
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- shielding ring
- walls
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Abstract
The utility model provides a wall-through shielded bushing of a high-voltage switchgear cabinet, which belongs to the technical field of high-voltage switchgear cabinets and resolves problems that the existing wall-through bushings have air gap discharge and uneven electric field and the like. The wall-through shielded bushing of a high-voltage switchgear cabinet comprises an insulating tube body, a mounting panel is radially arranged in the middle of the insulating tube body, a plurality of mounting holes fixedly provided with metal inserts are disposed on the mounting panel, the mounting panel extends to the inside of the tube body to form a partition board, a copper bar opening for mounting a high-voltage busbar is arranged in the middle of the partition board, high-voltage shielding rings and low-voltage induction rings which are in axial arrangement are embedded on the insulating tube body on the periphery of the partition board, the high-voltage shielding rings are connected with electrodes mounted in the copper bar opening via high-voltage connecting leads, the low-voltage induction rings are connected with the metal inserts via connecting wires, cross section of each low-voltage induction ring is circular arc shaped, and a convex surface of the circular arc faces towards the high-voltage shielding ring. The wall-through shielded bushing has the advantages of uniform electric field, simple structure, long service life and the like.
Description
Technical field
The utility model belongs to the high-tension switch cabinet technical field, relates to a kind of shielded tube through walls of shielded tube through walls, particularly a kind of high-tension switch cabinet.
Background technology
High-tension switch cabinet comprises contact box, sleeve pipe etc., and shielded tube through walls is the requisite cashier's office in a shop accessory of high-voltage switch gear, use shielded tube through walls after, the installation and maintenance of circuit are all very easy in the high-tension switch cabinet.The performance of shielded tube through walls will directly influence the security reliability of withstand voltage properties, insulation property and the operation of high-tension switch cabinet.
According to the regulation of GB156-2003 " normal voltage ", when the nominal voltage of network system was 20KV, then the corresponding equipment rated voltage was 24KV.Generally use at present the grid power transmission of 10KV, compare, adopt the 20KV grid power transmission can reduce line loss greatly with the 10KV grid power transmission.So the 20KV electric pressure will be a development in future trend.
Existing shielded tube through walls generally comprises insulation body, installation panel, high-tension shielding ring, low pressure inductance loop and copper bar mouth etc.But the high-tension shielding ring is arranged on the inner surface of insulation body, exposes in air, has the air gap electric discharge phenomena, also has the unequal phenomenon of electric field simultaneously, thereby the useful life of having reduced shielded tube through walls.
Summary of the invention
The purpose of this utility model is to have the problems referred to above at existing technology, has proposed a kind of air gap electric discharge phenomena that can eliminate on the high-tension shielding ring, thus the shielded tube through walls of the high-tension switch cabinet that while energy uniform electric field increases the service life.
The purpose of this utility model can realize by following technical proposal: a kind of shielded tube through walls of high-tension switch cabinet, comprise the insulation body, insulation body middle part radially is provided with installation panel, installation panel is provided with the installing hole that is installed with metal insert in several its, installation panel extends to form a space bar to body inside, space bar middle part has a copper bar mouth that is used to install high voltage bus, it is characterized in that: the high-tension shielding ring and the low pressure inductance loop that on the insulation body at the peripheral place of space bar, are embedded with axial distribution, the high-tension shielding ring is positioned at the low pressure inductance loop, the insulator that described high-tension shielding ring and low pressure inductance loop are insulated in the body is respectively sealed, being connected with high pressure on the high-tension shielding ring connects lead and connects lead by this high pressure and be connected with electrode in being installed in the copper bar mouth, the low pressure inductance loop is connected with metal insert in the above-mentioned installing hole by connecting electric wire, and the cross section of described low pressure inductance loop is that circular arc and its arc convex surface face above-mentioned high-tension shielding ring.
Installation panel is installed on the high-tension switch cabinet wall by installing hole, high-tension switch cabinet wall ground connection, and the low pressure inductance loop is connected ground connection by the metal insert in the installing hole with the high-tension switch cabinet wall.Can produce uniform electric field between high-tension shielding ring and the low pressure inductance loop, thereby reduce the product partial discharge quantity, prolong product useful life.The arc convex surface structure of low pressure inductance loop can increase and the high-tension shielding ring between the scope of uniform electric field, thereby more effectively reduce the product partial discharge quantity.The high-tension shielding ring is for being embedded in insulation body inside, seal by insulator all around, by the insulating material insulation, can effectively eliminate because of the high-tension shielding ring is embedded on the insulation inner surface of tube body and expose in air, the shortcoming of air gap creepage phenomenon takes place easily by air insulation.
In the shielded tube through walls of above-mentioned a kind of high-tension switch cabinet, described insulation body and installation panel are connected as a single entity.Some unnecessary air gap creepage phenomenons can be effectively avoided in the integral type design.
In the shielded tube through walls of above-mentioned a kind of high-tension switch cabinet, described copper bar mouth is shaped as rectangle.
The copper bar mouth can be produced different shapes according to customer demand, such as square, triangle, parallelogram etc.
In the shielded tube through walls of above-mentioned a kind of high-tension switch cabinet, described high-tension shielding ring and low pressure inductance loop are netted cylindric nonmagnetic metal electric conductor.
In the shielded tube through walls of above-mentioned a kind of high-tension switch cabinet, described cylindric nonmagnetic metal electric conductor is the Metal-Piercing silk screen layer.
In the shielded tube through walls of above-mentioned a kind of high-tension switch cabinet, described insulation tube wall is provided with some circle full skirts, and described full skirt is positioned at the both sides of above-mentioned installation panel.
Compared with prior art, its high-tension shielding ring of the shielded tube through walls of this high-tension switch cabinet and low pressure inductance loop structure can uniform electric fields, simultaneously the arc convex surface structure of its low pressure inductance loop can effectively increase and the high-tension shielding ring between the scope of uniform electric field, thereby more effectively reduce the product partial discharge quantity, prolong the useful life of product.The high-tension shielding ring is embedded in the insulation body, is sealed by insulating material, replaces original air insulation with the insulating material insulation, has improved insulation effect, efficiently solves the air gap electric discharge phenomena that produce because of air insulation.Simple in structure, the long service life and safe and reliable of this shielded tube through walls.
Description of drawings
Fig. 1 is a cutaway view of the present utility model.
Fig. 2 is a vertical view of the present utility model.
Fig. 3 is a stereogram of the present utility model.
Among the figure, 1, the insulation body; 2, installation panel; 21, installing hole; 22, metal insert; 3, space bar; 4, copper bar mouth; 5, high-tension shielding ring; 6, low pressure inductance loop; 7, full skirt.
Embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
Shown in Fig. 1,2 and 3, this shielded tube through walls comprises insulation body 1 and installation panel 2 for being applicable to the 24KV high-tension switch cabinet, and installation panel 2 radially is arranged on insulation body 1 middle part and is connected as a single entity with insulation body 1.Installation panel 2 is provided with four installing holes 21 that are installed with metal insert 22 in it, and installation panel 2 extends to form a space bar 3 to body inside, and space bar 3 middle parts have a copper bar mouth 4 that is used to install high voltage bus.On the insulation body 1 at space bar 3 peripheral places, be embedded with the high-tension shielding ring 5 and the low pressure inductance loop 6 of axial distribution, high-tension shielding ring 5 is positioned at low pressure inductance loop 6, electrode in high-tension shielding ring 5 connects lead and is installed in copper bar mouth 4 by high pressure is connected, low pressure inductance loop 6 is connected by connecting electric wire and installing hole 21 interior metal inserts 22, this sleeve pipe is fixed on the high-tension switch cabinet wall by installing hole 21, and low pressure inductance loop 6 is connected ground connection by metal insert 22 with the high-tension switch cabinet wall.Low pressure inductance loop 6 cross sections are that circular arc and its arc convex surface face high-tension shielding ring 5, and high-tension shielding ring 5 can form uniform electric field with low pressure inductance loop 6.The both sides that are positioned at installation panel 2 on the outer wall of insulation body 1 are respectively equipped with five circle full skirts 7 and six circle full skirts 7.
High-tension shielding ring 5 is embedded in insulation body 1, seal by the insulator of insulation body 1 around it, by the insulating material insulation, can effectively eliminate because of high-tension shielding ring 5 is embedded on insulation body 1 inner surface and expose in air, the shortcoming of air gap creepage phenomenon takes place easily by air insulation.
Can produce uniform electric field between high-tension shielding ring 5 and the low pressure inductance loop 6, the arc convex surface structure of low pressure inductance loop 6 can increase and high-tension shielding ring 5 between the scope of uniform electric field, thereby can more effectively reduce the product partial discharge quantity, prolong product useful life.
The shielded tube through walls of the high-tension switch cabinet in the present embodiment can reach following technical performance index at work: vitrification point (Tg): 95～105 ℃; Industrial frequency withstand voltage: 79KV/min; Partial discharge is not more than 5pC; Hot strength 70～90Mpa; Bending strength 110～130Mpa.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (6)
1. the shielded tube through walls of a high-tension switch cabinet, comprise insulation body (1), insulation body (1) middle part radially is provided with installation panel (2), installation panel (2) is provided with the installing hole (21) that is installed with metal insert (22) in several its, installation panel (2) extends to form a space bar (3) to body inside, space bar (3) middle part has a copper bar mouth (4) that is used to install high voltage bus, it is characterized in that: the high-tension shielding ring (5) and the low pressure inductance loop (6) that on the insulation body (1) at the peripheral place of space bar (3), are embedded with axial distribution, high-tension shielding ring (5) is positioned at low pressure inductance loop (6), the insulator that described high-tension shielding ring (5) and low pressure inductance loop (6) are insulated in the body (1) is respectively sealed, being connected with high pressure on the high-tension shielding ring (5) connects lead and connects lead electrode interior with being installed in copper bar mouth (4) by this high pressure and be connected, low pressure inductance loop (6) is connected by the interior metal insert (22) of connection electric wire and above-mentioned installing hole (21), and the cross section of described low pressure inductance loop (6) is that circular arc and its arc convex surface face above-mentioned high-tension shielding ring (5).
2. the shielded tube through walls of a kind of high-tension switch cabinet according to claim 1 is characterized in that, described insulation body (1) is connected as a single entity with installation panel (2).
3. the shielded tube through walls of a kind of high-tension switch cabinet according to claim 2 is characterized in that, described copper bar mouth (4) is shaped as rectangle.
4. according to the shielded tube through walls of claim 1 or 2 or 3 described a kind of high-tension switch cabinets, it is characterized in that described high-tension shielding ring (5) and low pressure inductance loop (6) are netted cylindric nonmagnetic metal electric conductor.
5. the shielded tube through walls of a kind of high-tension switch cabinet according to claim 4 is characterized in that, described cylindric nonmagnetic metal electric conductor is the Metal-Piercing silk screen layer.
6. the shielded tube through walls of a kind of high-tension switch cabinet according to claim 1 is characterized in that, described insulation body (1) outer wall is provided with some circle full skirts (7), and described full skirt (7) is positioned at the both sides of above-mentioned installation panel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203007071U CN201629495U (en) | 2010-01-14 | 2010-01-14 | Wall-through shielded bushing of high-voltage switchgear cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203007071U CN201629495U (en) | 2010-01-14 | 2010-01-14 | Wall-through shielded bushing of high-voltage switchgear cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201629495U true CN201629495U (en) | 2010-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010203007071U Expired - Lifetime CN201629495U (en) | 2010-01-14 | 2010-01-14 | Wall-through shielded bushing of high-voltage switchgear cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201629495U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013086774A1 (en) * | 2011-12-15 | 2013-06-20 | 平高集团有限公司 | Ultra-high voltage direct current wall bushing and shielding structure thereof |
| CN108448514A (en) * | 2018-04-03 | 2018-08-24 | 泸州诚远投资管理有限公司 | A kind of high voltage electric switch equipment wall bushing |
| CN114512947A (en) * | 2021-12-02 | 2022-05-17 | 国网宁夏电力有限公司电力科学研究院 | Method for improving breakdown resistance of wall bushing and wall bushing |
-
2010
- 2010-01-14 CN CN2010203007071U patent/CN201629495U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013086774A1 (en) * | 2011-12-15 | 2013-06-20 | 平高集团有限公司 | Ultra-high voltage direct current wall bushing and shielding structure thereof |
| CN108448514A (en) * | 2018-04-03 | 2018-08-24 | 泸州诚远投资管理有限公司 | A kind of high voltage electric switch equipment wall bushing |
| CN114512947A (en) * | 2021-12-02 | 2022-05-17 | 国网宁夏电力有限公司电力科学研究院 | Method for improving breakdown resistance of wall bushing and wall bushing |
| CN114512947B (en) * | 2021-12-02 | 2024-01-12 | 国网宁夏电力有限公司电力科学研究院 | Method for improving breakdown resistance of wall bushing and wall bushing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG LEI'AN ELECTRIC CO., LTD. Free format text: FORMER OWNER: ZHEJIANG ROXZ ELECTRIC APPLIANCE CO., LTD. Effective date: 20101216 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20101216 Address after: Yuhuan County Town, Taizhou city of Zhejiang province Truman 317605 Hing Road No. 190 Patentee after: Zhejiang Leian Electric Co., Ltd. Address before: Yuhuan County Town, Taizhou city of Zhejiang province Truman 317605 Hing Road No. 190 Patentee before: Zhejiang ROXZ Electric Appliance Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101110 |